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Re: STM32F07x USB and HSI48 Support
Posted: Sun Dec 21, 2014 10:36 am
by Giovanni
Hi,
I got my board and tested everything. I had to make few changes because the PMA RAM is shared with CAN and made other small changes in order to keep everything working with other devices.
I committed a demo for the STM32072B-DISCOVERY too.
Thanks for all the work done, the RM was not very clear for me.
Giovanni
Re: STM32F07x USB and HSI48 Support
Posted: Sun Dec 21, 2014 3:21 pm
by M1Sports20
I agree that the RM is not clear about the change they made to the USB peripheral.
Sorry I forgot to mention that the USB RAM buffer is shared with the CAN memory. I knew this and did not implement it because I wasn't sure how you handled situations like this in ChibiOS.
Once again, thank you for allowing this project being easy to work with.
I will grab the latest source and try this with my project next weekend.
Thanks,
Michael
Re: STM32F07x USB and HSI48 Support
Posted: Fri Jan 09, 2015 10:43 am
by rew
I needed this patch for the demo-app to compile:
Code: Select all
diff -ur app_orig/mcuconf.h app/mcuconf.h
--- app_orig/mcuconf.h 2014-11-19 04:10:02.000000000 +0100
+++ app/mcuconf.h 2015-01-09 10:35:25.924230790 +0100
@@ -164,3 +164,4 @@
#define STM32_USB_USE_USB1 TRUE
#define STM33_USB_LOW_POWER_ON_SUSPEND FALSE
#define STM32_USB_USB1_LP_IRQ_PRIORITY 3
+#define STM32_USB_USB1_HP_IRQ_PRIORITY 3
Does the discovery use "vbussense"? I'll have to patch that before it runs on my hardware.
Update: Hmm. Only the "OTG" version of the USB module has this vbussense feature? ... OK. seems that way.
Hmm. It causes an
Code: Select all
Jan 9 10:57:19 assurancetourix kernel: [3044947.915882] usb 3-4: new full-speed USB device number 21 using xhci_hcd
Jan 9 10:57:21 assurancetourix kernel: [3044949.501219] usb usb3-port4: unable to enumerate USB device
when I single step it past chSysInit, but it ends up in _unhandled_exception without any dectection on USB when I simply run it.
Re: STM32F07x USB and HSI48 Support
Posted: Sun Jan 11, 2015 11:22 am
by Giovanni
Hi,
Thanks for finding, I implemented a slightly different fix, there is no need to update all the mcuconf.h files.
Giovanni
Re: STM32F07x USB and HSI48 Support
Posted: Sun Jan 11, 2015 12:26 pm
by rew
Is there a better way to debug the "unhandled exceptions"? As far as I can see there are a whole bunch of exceptions, knowing which one triggered might help me find the problem. Similarly being able to backtrace, or maybe int the unhandled exception handler:
Code: Select all
volatile void *where_it_happened;
where_it_happened = /* magic with the stack... */ ;
so that in the debugger I can see where the exception happened?
The last time I had an unhandled exception in MY code, I was able to single step until it crashed. I had allocated 3*4 bytes for a variable that required 3*8 bytes. But in this case, things happen in code I'm not familiar with, so I need any help I can get.
Re: STM32F07x USB and HSI48 Support
Posted: Mon Jan 12, 2015 2:18 pm
by rew
I'm one step further..... (I bought an STM32F072 discovery board to make sure that I am using the same hardware as you).
It seems st-util's flash loader in RAM does something that causes the unhandled exception.... Before main is called! (It doesn't hit my breakpoint set as "break main").
If I issue a "reset" after loading the program in flash, it works and wiggles the mouse.
[update]: Also runs on my hardware. One wasted stm32F072 discovery boad.
Re: STM32F07x USB and HSI48 Support
Posted: Sun Mar 22, 2015 3:49 pm
by rew
I now have STM32F042F USB hardware.... This doesn't work..... The USB part that is....
The STM32F0 "registry" defines the '042 as a LD device, but then puts the "if '72 or '42 then it has USB" in the MD section. I moved that....
My application, as well as the demo app above loads and runs, but:
Code: Select all
Mar 22 15:31:33 assurancetourix kernel: [1916752.578901] usb 3-6: new full-speed USB device number 56 using xhci_hcd
Mar 22 15:31:33 assurancetourix kernel: [1916752.579045] usb 3-6: Device not responding to setup address.
Mar 22 15:31:34 assurancetourix kernel: [1916752.783169] usb 3-6: Device not responding to setup address.
Mar 22 15:31:34 assurancetourix kernel: [1916752.987211] usb 3-6: device not accepting address 56, error -71
Mar 22 15:31:34 assurancetourix kernel: [1916752.987257] usb usb3-port6: unable to enumerate USB device
Maybe the USB module is slightly different between the two? Nope: they are documented in the same datasheet. Maybe the USB module or the RAM is at a different address? Nope: USB module at 40005c00, buffer RAM 1k higher on both processors.
What I do notice is that the registers in the USB module are completely different:
on the '072:
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> dumpm 40005c00
40005c00 00006220 00007021 00000622 00000000
40005c10 00000000 00000000 00000000 00000000
40005c20 00009c00 00002200 0000a3de 0000008f
40005c30 00000000 00000000 00008000 00000000
On the '042:
Code: Select all
> dumpm 40005c00
40005c00 00000000 00000000 00000000 00000000
40005c10 00000000 00000000 00000000 00000000
40005c20 00009c00 00000000 00000000 00000080
40005c30 00000000 00000000 00008000 00000000
(Note that at offset 0x20 we see a mirror of the registers at 0x40, becuase 0x20-0x40 are "reserved". So read ...40 where it says ...20).
Any suggestions to get this to work?
Re: STM32F07x USB and HSI48 Support
Posted: Sun Mar 22, 2015 3:55 pm
by Giovanni
I don't have 042 HW, from the RM it should be exactly the same.
I fixed the registry, thanks.
Giovanni
Re: STM32F07x USB and HSI48 Support
Posted: Sun Mar 22, 2015 4:54 pm
by rew
If you PM me an address, I'll fix that "hw problem".
Re: STM32F07x USB and HSI48 Support
Posted: Wed Mar 25, 2015 3:16 pm
by Giovanni
Hi,
I committed the changes to the F0 registry, now it is more detailed. Could everybody give it a try?
Giovanni